(function(){
  function getCsrfToken() {
    return document.querySelector('meta[name="csrf-token"]')?.content || null;
  }

  // Fetch live price
  async function fetchLivePrice(sku, placeholderEl) {
    try {
      placeholderEl.innerHTML = 'Loading <span class="spinner"></span>';
      const res = await fetch('/ajax/live-pricing', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'X-Requested-With': 'XMLHttpRequest',
          'X-CSRF-TOKEN': getCsrfToken()
        },
        credentials: 'include',
        body: JSON.stringify({
          products: [{
            sku: sku,
            qty: 1,
            pack: "1",
            pack_uom: "1",
            template_item: "",
            vendor_code: ""
          }]
        })
      });

      if (!res.ok) throw new Error("Price fetch failed");
      const data = await res.json();

      if (data?.status === "success" && data.data?.[0]?.price != null) {
        placeholderEl.textContent = "£" + Number(data.data[0].price).toFixed(2);
      } else {
        placeholderEl.textContent = "Call for price";
      }
    } catch (err) {
      console.error("fetchLivePrice error:", err);
      placeholderEl.textContent = "Call for price";
    }
  }

  // Add-to-cart logic
  async function addToCart(button) {
    const csrfToken = getCsrfToken();
    if (!csrfToken) {
      console.error("CSRF token not found");
      return;
    }

    const product = {
      item_id: parseInt(button.dataset.itemId, 10),
      item_sku: button.dataset.itemSku,
      item_catalog_id: parseInt(button.dataset.itemCatalogId, 10),
      item_catalog_item_id: parseInt(button.dataset.itemCatalogItemId, 10),
      item_supplier_id: parseInt(button.dataset.itemSupplierId, 10),
    };

    const payload = new URLSearchParams();
    payload.set("product", JSON.stringify(product));
    payload.set("qty", "1");

    const originalText = button.textContent;
    button.textContent = "Adding…";
    button.disabled = true;

    try {
      const res = await fetch("/cart/addcart", {
        method: "POST",
        headers: {
          "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
          "X-CSRF-TOKEN": csrfToken,
          "X-Requested-With": "XMLHttpRequest"
        },
        body: payload.toString(),
        credentials: "include"
      });

      if (res.ok) {
        sessionStorage.setItem("cartAddedMessage", "success");
        button.textContent = "Added ✓";

        // ✅ Only reload if NOT on the /cart page
        if (location.pathname.replace(/\/+$/, '') !== '/cart') {
          setTimeout(() => window.location.reload(), 400);
        }

      } else {
        console.error("Add to basket failed:", await res.text());
        button.textContent = "Error ✗";
        setTimeout(() => {
          button.textContent = originalText;
          button.disabled = false;
        }, 2000);
      }
    } catch (err) {
      console.error("Request error:", err);
      button.textContent = "Error ✗";
      setTimeout(() => {
        button.textContent = originalText;
        button.disabled = false;
      }, 2000);
    }
  }

  // Attach button logic
  document.querySelectorAll(".paratus-add-to-cart-btn").forEach(btn => {
    btn.addEventListener("click", () => addToCart(btn));

    const pricePlaceholder = btn.closest(".promo-margin")?.querySelector(".price-placeholder");
    if (pricePlaceholder) {
      fetchLivePrice(btn.dataset.itemSku, pricePlaceholder);
    }
  });

  // Success message after reload
  window.addEventListener("DOMContentLoaded", () => {
    const msg = sessionStorage.getItem("cartAddedMessage");
    if (msg === "success") {
      const notice = document.createElement("div");
      notice.innerHTML = `
        <span style="display:flex; align-items:center; color: var(--evo-brand-secondary); font-weight:600; font-size:14px;">
          <i class="fas fa-thumbs-up"></i> This offer has been added to your cart!
        </span>
      `;
      document.querySelectorAll(".paratus-add-to-cart-btn").forEach(btn => {
        btn.insertAdjacentElement("afterend", notice.cloneNode(true));
      });
      sessionStorage.removeItem("cartAddedMessage");
    }
  });
})();